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A Taxonomic and Morphological study of Fresh water Diatom species Synedra ulna (Nitzsch) Ehrenberg in Cauvery River at Bhavani region, Tamil Nadu, India

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Author Affiliations

  • 1 Department of Geology, Periyar University, Salem-636 011, Tamil Nadu, INDIA

Int. Res. J. Environment Sci., Volume 2, Issue (11), Pages 18-22, November,22 (2013)

Abstract

Epilithic and Epiphytic diatoms from stones and macrophytes are collected in Cauvery river at Bhavani region in Erode District, Tamil Nadu State and examined by using Light Microscopy (LM). Sixty diatoms belonging to twenty two genera species are identified. The fresh water species Synedra ulna (Nitzsch) Ehrenberg is recorded for the first time in the study area and a large amount of epiphytic diatoms species. The Synedra ulna species belonging to the genus Synedra are illustrious by tiny taxonomic features. The detailed morphology of the species Synedra ulna (Nitzsch) Ehrenberg with the length and breadth of the valve, number of striae, shape of the apices, shape of the pseudoraphe and shape of the central area are examined. The species Synedra ulna (Nitzsch) Ehrenberg was found to be associated with fresh water and slightly water environment.

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